Biography
There are at least four bands with the name Dyad:
First one is a progressive death metal band from Zagreb, Croatia.
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Second one is a solo project of Evgeny Gavrilov from Novosibirsk, Russia also known as member of FPRF band.
https://soundcloud.com/dyad
The third one is the Vancouver, B.C. trio of Kori Miyanishi (vocals, banjo, guitar, fiddle, jaw-harp), Leah Abramson (vocals, guitar) and Shiho Mizumoto (fiddles), who came together to play traditional American Old Time music after delving into everything from indie-rock and punk to classical and traditional music of various cultures. They are no longer active, though some of the musicians have continued with solo efforts.
The fourth one is a techno project of Ben Gibson and Fundamental Interaction.
They also run a record label under the same name.
Biography text from Last.fm, available under CC BY-SA.